| Discovery[1] | |
|---|---|
| Discovered by | G. Neujmin |
| Discovery site | Simeiz Obs. |
| Discovery date | 16 August 1936 |
| Designations | |
| (1692) Subbotina | |
Named after | Mikhail Subbotin[2][3] (Soviet scientist) |
| 1936 QD · 1927 SL 1930 FG · 1931 OA 1935 GJ · 1935 JJ 1940 LK · 1941 SO1 1941 UA · 1949 HL1 1950 RZ · 1951 YM1 1955 SO2 · 1964 RC | |
| main-belt[1][4] · (middle) background[5][6] | |
| Orbital characteristics[4] | |
| Epoch 27 April 2019 (JD 2458600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 88.24yr (32,228 d) |
| Aphelion | 3.1731AU |
| Perihelion | 2.4012 AU |
| 2.7871 AU | |
| Eccentricity | 0.1385 |
| 4.65 yr (1,700 d) | |
| 289.80° | |
| 0° 12m 42.48s / day | |
| Inclination | 2.4273° |
| 199.66° | |
| 111.88° | |
| Physical characteristics | |
| 36.075±0.380 km[7][8][9] 36.59±1.7 km[10] 38.11±0.53 km[11] | |
| 9.2457±0.0005 h[12][13] | |
| 0.045[11] 0.0479[10] 0.049[7][9][8] | |
| SMASS =Cg[4] | |
| 11.10[7][9][10][11] 11.20[14] 11.3[1][4][12][15][16] 11.48[17] | |
1692 Subbotina, provisional designation1936 QD, is a dark backgroundasteroid from the central region of theasteroid belt, approximately 37 kilometers (23 miles) in diameter. The carbonaceousCg-type asteroid has arotation period of 9.2 hours.[12] It was discovered byGrigory Neujmin at the CrimeanSimeiz Observatory in 1936, and later named after Soviet mathematician and astronomerMikhail Subbotin.[1][2]
Subbotina was discovered by Soviet-Russian astronomerGrigory Neujmin at the CrimeanSimeiz Observatory on 16 August 1936.[1] On the following night, astronomerKarl Reinmuth independently discovered the body at theHeidelberg Observatory in Germany.[2] The asteroid was first observed as1927 SL at the discovering observatory in September 1927. Its first used observation was made at Heidelberg in July 1931, extending the body'sobservation arc by 5 years prior to its official discovery observation in 1936.[1]
Thisminor planet was named in memory of eminent Soviet mathematician and astronomer,Mikhail Subbotin (1893–1966), long-time director of the Institute of Theoretical Astronomy (ITA) in former Leningrad. The lunar craterSubbotin was also named in his honour.[2][3] The officialnaming citation was published by theMinor Planet Center on 1 June 1967 (M.P.C. 2740).[18]
Subbotina is a non-family asteroid from the main belt'sbackground population.[5][6] It orbits the Sun in thecentral asteroid belt at a distance of 2.4–3.2 AU once every 4 years and 8 months (1,700 days;semi-major axis of 2.79 AU). Its orbit has aneccentricity of 0.14 and aninclination of 2° with respect to theecliptic.[4]
In theSMASS-II taxonomy,Subbotina has been characterized as a dark Cg-type, asubtype of the wider group of carbonaceousC-type asteroids with low albedos.[4]
In October 2006, a rotationallightcurve ofSubbotina was obtained fromphotometric observations by ItalianSilvano Casulli and FrenchLaurent Bernasconi, both amateur astronomers.[13] Lightcurve analysis gave a well-definedrotation period of9.2457±0.0005 hours with a brightness variation of0.3 inmagnitude (U=3).[12] Somewhat higher amplitudes of 0.42 and 0.62 magnitude were found by the NEOWISE mission.[14][17]
According to the space-based surveys carried out by the Infrared Astronomical SatelliteIRAS, the JapaneseAkari satellite, and NASA'sWide-field Infrared Survey Explorer with its subsequentNEOWISE mission,Subbotina measures between 34.8 and 43.0 kilometers in diameter and its surface has a notably lowalbedo in the range of 0.02 to 0.049.[5][8][9][10][11][14][12][16][17] TheCollaborative Asteroid Lightcurve Link derives an albedo of 0.04 and a diameter of 36.5 kilometers with anabsolute magnitude of 11.3.[12]
